hook鼠标

library dllMouse;
uses
  SysUtils,
  Classes,
  UnitHookDLL in 'UnitHookDLL.pas',
  UnitHookConst in 'UnitHookConst.pas';

{$R *.res}
{  function StartHook(sender : HWND;MessageID : WORD) : BOOL; stdcall;
  function StopHook: BOOL; stdcall;
  procedure GetRbutton; stdcall;}

  exports
   StartHook, StopHook,GetRbutton;

begin
end.




{
截获鼠标消息例子.
截获所有进程的鼠标消息,需要用到系统钩子,即要用到dll才能够截取,因此挂
钩函数封装在dll动态链接库中.由于需要跨进程共享数据,所以在dll使用内存映像
文件来共享数据.
}
unit UnitHookDLL;
// download by http://www.codefans.net
interface

uses Windows, Messages, Dialogs, SysUtils,UnitHookConst;


var
  hMappingFile : THandle;
  pShMem : PShareMem;
  FirstProcess : boolean;
  NextHook: HHook;

  function StartHook(sender : HWND;MessageID : WORD) : BOOL; stdcall;
  function StopHook: BOOL; stdcall;
  procedure GetRbutton; stdcall;

implementation

procedure GetRbutton; stdcall;
begin
   pShMem^.IfRbutton:=true;
end;

function HookHandler(iCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall; export;
begin
  Result := 0;
  If iCode < 0 Then Result := CallNextHookEx(NextHook, iCode, wParam, lParam);

  case wparam of
  WM_LBUTTONDOWN:
    begin
    end;
  WM_LBUTTONUP:
    begin
    end;
  WM_LBUTTONDBLCLK:
    begin
    end;
  WM_RBUTTONDOWN:
    begin
      if pShMem^.IfRbutton then
      begin
         pShMem^.IfRbutton := false;
         pShMem^.data2:=pMOUSEHOOKSTRUCT(lparam)^;
         getwindowtext(pShMem^.data2.hwnd,pShMem^.buffer,1024);
         SendMessage(pShMem^.data1[1],pShMem^.data1[2]+1,wParam,integer(@(pShMem^.data2)) );
         //             窗口                   消息                        坐标
      end;
    end;
  WM_RBUTTONUP:
    begin
    end;
  WM_RBUTTONDBLCLK:
    begin
    end;
  WM_MBUTTONDOWN:
    begin
    end;
  WM_MBUTTONUP:
    begin
    end;
  WM_MBUTTONDBLCLK:
    begin
    end;
  WM_NCMouseMove, WM_MOUSEMOVE:
    begin
      pShMem^.data2:=pMOUSEHOOKSTRUCT(lparam)^;
      getwindowtext(pShMem^.data2.hwnd,pShMem^.buffer,1024);
      SendMessage(pShMem^.data1[1],pShMem^.data1[2],wParam,integer(@(pShMem^.data2)) );
      //             窗口                   消息                        坐标
    end;
  end;
end;

function StartHook(sender : HWND;MessageID : WORD) : BOOL;
  function GetModuleHandleFromInstance: THandle;
  var
    s: array[0..512] of char;
  begin
    GetModuleFileName(hInstance, s, sizeof(s)-1);
    Result := GetModuleHandle(s);
  end;
begin
  Result := False;
  if NextHook <> 0 then Exit;
  pShMem^.data1[1]:=sender;
  pShMem^.data1[2]:=messageid;
  NextHook :=
     SetWindowsHookEx(WH_mouse, HookHandler, HInstance, 0);  //全局
     //SetWindowsHookEx(WH_mouse, HookHandler, GetModuleHandleFromInstance, GetCurrentThreadID); //实例
  Result := NextHook <> 0;
end;

function StopHook: BOOL;
begin
  if NextHook <> 0 then
  begin
    UnhookWindowshookEx(NextHook);
    NextHook := 0;
    //SendMessage(HWND_BROADCAST,WM_SETTINGCHANGE,0,0);
  end;
  Result := NextHook = 0;
end;

initialization
        hMappingFile := OpenFileMapping(FILE_MAP_WRITE,False,MappingFileName);
        if hMappingFile=0 then
        begin
           hMappingFile := CreateFileMapping($FFFFFFFF,nil,PAGE_READWRITE,0,SizeOf(TShareMem),MappingFileName);
           FirstProcess:=true;
        end
        else FirstProcess:=false;
        if hMappingFile=0 then Exception.Create('不能建立共享内存!');

        pShMem :=  MapViewOfFile(hMappingFile,FILE_MAP_WRITE or FILE_MAP_READ,0,0,0);
        if pShMem = nil then
        begin
           CloseHandle(hMappingFile);
           Exception.Create('不能映射共享内存!');
        end;
        if FirstProcess then
        begin
           pShmem^.IfRbutton := false;
        end;
        NextHook:=0;
finalization
        UnMapViewOfFile(pShMem);
        CloseHandle(hMappingFile);

end.






unit Unitmain;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls,UnitHookConst;

type
  TForm1 = class(TForm)
    edt1: TEdit;
    edt2: TEdit;
    capture: TButton;
    edt3: TEdit;
    btn2: TButton;
    lbl1: TLabel;
    edt4: TEdit;
    edt5: TEdit;
    edt6: TEdit;
    pnl1: TPanel;
    procedure captureClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure btn2Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    procedure WndProc(var Messages: TMessage); override;
  end;

var
  Form1: TForm1;
  hMappingFile : THandle;
  pShMem : PShareMem;
const MessageID = WM_User + 100;

implementation

 {$R *.DFM}
 //dllMouse.dll   DllMouse.DLL
  function StartHook(sender : HWND;MessageID : WORD) : BOOL;stdcall; external 'dllMouse.dll';
  function StopHook: BOOL;stdcall; external 'dllMouse.dll';
  procedure GetRbutton; stdcall; external 'dllMouse.dll';


procedure TForm1.captureClick(Sender: TObject);
begin
  if capture.caption='开始' then
  begin
     if StartHook(Form1.Handle,MessageID) then
       capture.caption:='停止';
  end
  else begin
    if StopHook then
       capture.caption:='开始';
  end;
end;

procedure TForm1.btn2Click(Sender: TObject);
begin
   if capture.caption<>'开始' then
   begin
      edt4.text:='';
      edt5.text:='';
      edt6.text:='';
      GetRbutton;
   end;
end;



procedure TForm1.FormCreate(Sender: TObject);
begin
   pShMem := nil;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  if capture.caption='开始' then
  begin
  end
  else begin
    if StopHook then
       capture.caption:='开始';
  end;
end;

procedure TForm1.WndProc(var Messages: TMessage);
var
   x,y:integer;
   s:array[0..255]of char;
begin
   if pShMem = nil then
   begin
        hMappingFile := OpenFileMapping(FILE_MAP_WRITE,False,MappingFileName);
        if hMappingFile=0 then Exception.Create('不能建立共享内存!');
        pShMem :=  MapViewOfFile(hMappingFile,FILE_MAP_WRITE or FILE_MAP_READ,0,0,0);
        if pShMem = nil then
        begin
           CloseHandle(hMappingFile);
           Exception.Create('不能映射共享内存!');
        end;
   end;
   if pShMem = nil then exit;   
  if Messages.Msg = MessageID then
  begin
    x:=pShMem^.data2.pt.x;
    y:=pShMem^.data2.pt.y;
    edt3.text:='HWND:'+inttostr(pShMem^.data2.hwnd);
    pnl1.caption:='x='+inttostr(x)+' y='+inttostr(y);
    edt2.text:='WindowsText:'+string(pShMem^.buffer);
    getClassName(pShMem^.data2.hwnd,s,255);
    edt1.text:='ClassName:"'+string(s)+'"';
  end
  else if Messages.Msg = MessageID+1 then
  begin
    edt4.text:=inttostr(pShMem^.data2.hwnd);
    edt5.text:='WindowsText:'+string(pShMem^.buffer);
    getClassName(pShMem^.data2.hwnd,s,255);
    edt6.text:='ClassName:"'+string(s)+'"';
  end
  else Inherited;
end;

end.